Incisiors

Question 1

Upper right central incisor identification markers?

Answer 1

Crown almost same width as length
Mesiodistal incisal angle more rounded and other more sharp
Slightly convex
Concave lingual surface with right and left marginal ridges meeting at cervix = cervix cingulum (distally displaced on all incisal teeth)
Can have 3 cusplets/ mammelons before worn down
Greater curvature in medial cervical region
Almost same length of root as crown
(Labial convex shape most at cervix and least at incisal edge)
ROOT - rounded cone shaped
PULP - wide mesiodistally, narrow labioingually and roof has three pulp horns ( same for lateral )

Question 2

Upper right lateral incisor identification markers?

Answer 2

More slender less rectangular crown
Short distal side and longer medial side with larger curvature in cervix
Pronounced marginal ridges on each side and where meet at cervix they enclose a depression or fossa (prone to caries)
Longer root
Thicker from palatal to labial than central
Can have 3 mammelons/cusplets
ROOT - compressed mesiodistally and slightly grooved

Question 3

Lower right central incisor identification markers?

Answer 3

Flat and almost symmetrical
Distoincisal angle slightly more curved
Can have 3 cusplets/ mammelons
Cervical undulation greater in medial side
Slight marginal ridges and slight cingulum
More lingually inclined than lateral
Looking down over tooth, root looks like goes lingually inclined
Lower incisors = pulp chamber labiolingually flattened and root canal flattened mesiodistally

Question 4

Lower right lateral incisor identification markers?

Answer 4

Distoincisal angle more rounded
More fan shaped than central
Medial side slightly longer than distal
Leans lingually and more wedge shaped than cupped like central
Lingual surface v similar to central
View from incisal edge looking down on the tooth, crown looks slightly twisted and directly over root
Larger, more pronounced distal flare (medial side cervix larger undulation)

Question 5

Overall difference in upper and lower incisors

Answer 5

Upper incisors not actually lingually inclined in comparison to cingulum where as lower are a lot

Question 6

Incisor dimension names

Answer 6

Labial lingual diameter
Mesiodistal diameter at cervix
Mesiodistal diameter of crown
Cervature of cervical line at distal and medial sides
Cervico incisal length of crown
Root length